Oil ignition



Aug. 13, 1929. o. A. FOGARTY 1,724,400

OIL IGNITION Original Filed July 6, 1926 N65 I F/G-5 f/VVENTOQ Patented Aug. 13, 1929.

UNITED STATES PATENT OFFICE.

ORVILLE ALDEN FOGARTY, OF COWANSVILLE, QUEBEC, CANADA, ASSIGNOR TO VILAS J1 BURNERS LIMITED, OF COWANSVILLE, CANADA.

OIL IGNITION.

Application filed July 6, 1926, Serial No. 120,693. Renewed January 11, 1929.

The invention relates to an oil ignition, as described in the present specification and illustrated in the accompanying drawings that form part of the same.

The invention consists essentially of the novel features of construction pointed out broadly and specifically in the claims for novelty following a description containing an explanation in detail of an acceptable form of the invention.

The objects of the invention are to extend each spark into a miniature flame, that will not fail to ignite the mixture being delivered to the combustion chamber; to insure in oil burning mechanisms, where the oil is not so inflammable as in other devices, a guard against ignition failure and its consequences; to avoid in oil burners the preliminary flooding of oil known in many systcms; to intensify the spark and maintain it within the flame area; to simplify the coin struction of such devices and produce the improved ignition at a low cost; and to provide in ignition devices generally regularity and elliciency in every other direction.

In the drawings, Figure 1 is a plan view of the application of this invention in the I air draft tube of an oil-burning nuechanism.

Figure, 2 is an end view of the device as illustrated in Figure 1.

Figure 3 is a perspective detail of an electrode.

Figure 4 is a longitudinal sectional view of the. spark plug containing one electrode.

Figure 5 is a detail of the collar for 'supporting the grounded electrode.

Like numerals of reference indicate corresponding parts in the various figures.

Referring to the drawings, in the a )plication of the invention herein illustrate one electrode 10 is grounded on the oil feed pipe 11. and the. other electrode 12 extends through spark plug 13 having the porcelain core 14 and the terminal 15 at the extreme. inner end; said spark plug being secured to the same pipe 11 through the mounting 10.

The electrodes 10 and 12 are formed of the conducting rods 17 and 18 providing the long extensions desirable in oil burners.

The tungsten points 19 and 20 are secured in the outer ends of the rods 17 and 18 and are bent inwardly above the nozzle mouth 21 and downwardly in front of said, mouth and then sharply bent at 22 and 23 to form the outwardly flaring wires 2t and 25, the sparking gap 26 being between the points 22 and The electrode 10 extends from the collar 27' and particularly from the lug 28 extending from said collar, the latter being secured to the pipe 11 by the set screw 29. The connector 30 is secured to the terminal 15 by the thumb nut 31 and Wire 32 extends inwardly within the air tube 33 to the source of electrical energy.

In the operation of this ignition presumingthat the device is used for an oil burner, the points 22 and 23 are on either side of the gap 26 and it is therefore the point of sparking. The current jumps the gap and creates a hotelectric spark and the draft always being in the same direction as the flowing oil the tendency is to carry the spark out on the flaring wires 24 and 25 and thus create a miniature flame in fan tail shape, such as cannot fail to ignite the fuel at the beginning of the fire.

\Vhat I claimis:

1. In oil ignition the combination of a nozzle. discharging a fuel mixture in the path of a draft of air and a pair of elongated electrodes forming part of a sparking device and carrying at theirouter ends tungsten points formed of wires bent downwardly and inwardly towards one another and distanced at the angle of the. bend to constitute the sparking gap and continuing from said angles in flaring extensions in the line of said discharge. of mixture and draft of air and forming supports for a torch ignited by the spark across said gap.

2. In oil ignition, a sparking device comprisinga body and an elongated electrode extending therefrom, an electrode grounded in a supporting collar and tungsten wires soeketed in said electrodes and extendin outwardly and inwardly to form a spark gap and flaring from said ga to their ends in the path of the fuel and air draft.

Signed at Montreal, Canada, this 14th day of J une, 1926.

ORVILLE ALDEN FOGARTY. 

